Solve the problem.A drugstore sells two types, A and B, of humidifiers. Each humidifier of type A and type B costs $15 and $25, respectively. The store wants at least 9 humidifiers in stock and does not want its investment in the humidifiers to exceed $1500. Graph the possible inventory of the humidifiers and find the vertices. 
A. 
B. 
C. 
D. 
Answer: C
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Use properties of rational exponents to simplify the expression. Assume that any variables represent positive numbers.(x-1/4y7/5)3/4
A. x1/2y43/12
B. -x3/16y21/20
C. x3/16y21/20
D. 
Find the y- and x-intercepts for the equation. Then graph the equation.2x - 6y = 12
A. (0, -2); (-6, 0)
B. (0, 2); (-6, 0)
C. (0, -2); (6, 0)
D. (0, 2); (6, 0)
Find the x-intercepts (if any) for the graph of the quadratic function.f(x) = (x + 3)2 - 9
A. (0, 0) and (-6, 0) B. (0, 0) and (-9, 0) C. (0, 0) and (6, 0) D. (6, 0) and (-6, 0)
Solve the problem.Within a group of n people, the number of possible handshakes, N, is given by N = 
(n2 - n). At a party, everybody shakes hands with every other person. If the total number of handshakes is 276, how many people are at the party?
A. 24 B. 26 C. 25 D. 23